“This calendar I am playing with this surface — hard court surface — is tougher than grass or clay for the body, and all the time we are playing more on this surface,” said Nadal, who beat Roger Federer 7-5, 3-6, 7-6 (3), 3-6, 6-2 for his first Australian Open title Sunday.
“In my humble opinion, we have to change that a bit more,” the Spaniard said. “I can say that because I won a grand slam on hard (courts).”
“Before if I say that, a lot of people think ‘He wants to change because he’s a clay player.’ But believe me, I don’t think anything about if I am a clay court player or not.
“When I say this, I think about the best for the players and for the future. It’s not possible to have a lot of injuries on tour like this. So we have to try to change something.”